Fluorone
荧光酮, 3 -异咕吨酮
🗣️ 情景例句
Well, forty-seven, to be exact.
准确点说， 四十七年。
I don't know him well.
我跟他不熟。
To my surprise, he gave me the money immediately.
令我惊奇的是，他立刻把钱给了我。